INNOVATOR: Silicon Valley is the world's innovation hub, a place synonymous with the latest in tech. One of its best minds is a Filipino-American engineer Diosdado “Dado” Banatao. Every personal computer (PC) we see today has two things that can be credited to him: the PC chip set and the graphics accelerator chip. But the man whose intellect has contributed what makes every single PC work started in a humble home in northern Philippines , in a pastoral province known as Cagayan Valley.